Technical Background and Industry Requirements

In the field of construction, mining, water conservancy and other heavy industries, the performance of lifting equipment directly affects the efficiency and safety of operation. The traditional winch is often faced with problems such as insufficient tension, single speed adjustment and poor installation adaptability, which is difficult to meet the diversified needs of complex working conditions. Zhengzhou Rongjing Mechanical Equipment Co., Ltd. has introduced a full range of electronically controlled winches with more than ten years of technology accumulation. Through modular design, intelligent control and high-precision manufacturing, it has realized stepless adjustment of pulling force range of 5-50 tons and speed of 0.5-15 m/min, adapted to the three-dimensional operation scene with space height of 2-10 meters, and has become the core equipment for lifting operations in many industries.

Technical Analysis: Core Architecture and Advantages of Electronically Controlled winch

1. Power system: Three-phase asynchronous motor + frequency converter combination is adopted, the power covers 7.5-75kW, 0-100% torque output is realized through vector control technology, starting current is reduced by 40%, and energy consumption is reduced by 15% compared with traditional models. For example, in the mining scene, the 50-ton model can continuously lift ore for 8 hours, and the motor temperature is stable within 65 ℃, ensuring long-term reliable operation.

2. transmission mechanism: Planetary gear reducer and open gear pair two-stage transmission, transmission ratio 1:32-1:128 adjustable, gear modulus 3-8mm, tooth surface hardness HRC58-62, carrying capacity increased by 30%. The measured data show that when the reinforcement cage is hoisted in construction, the noise of the reducer is less than or equal to 75dB, the vibration amplitude is less than or equal to 0.2mm, and the running stability is better than the industry standard.

3. Braking system: Electromagnetic power loss brake hydraulic disc brake double insurance design, braking torque 500-5000N · m, braking time ≤ 0.3 seconds. In the water conservancy project gate opening and closing scenario, the dual brake system can withstand the lateral load at 10 m/s wind speed to ensure the safe shutdown of the equipment in extreme weather.

Practical Guide: Installation and Commissioning of Electronically Controlled winch

STEP 1: Basic Installation: According to the weight of the equipment (5-20 tons), the thickness of the concrete foundation is ≥ 500mm, the embedded depth of the anchor bolt is ≥ 300mm, and the horizontal error is ≤ 1/1000. For example, when lifting containers at ship terminals, additional shockproof rubber pads are required to reduce the impact of hull shaking on equipment.

STEP2: Electrical Wiring: The power cord adopts YJV-0.6/1kV cable, the cross-sectional area is selected according to the motor power (4mm ² for 7.5kW and 35mm ² for 75kW), and the grounding resistance is ≤ 4Ω. The parameter setting of the frequency converter shall match the rated current of the motor (for example, the rated current of the 50-ton motor shall be 145A, and the overload capacity of the frequency converter shall reach 150 for 1 minute).

STEP3: Load Test: After 30 minutes of no-load operation, gradually load to 80%, 100, and 120 of the rated load, each time for 10 minutes, record the motor temperature, braking distance and other data. In the actual measurement, the braking distance of Zhengzhou Rongjing 30-ton model is less than or equal to 0.5 meters and the motor temperature is less than or equal to 80 ℃ during the 120% overload test, which meets the GB/T 3811-2008 standard.

Case Dismantling: Efficient Applications in Mining

A large-scale iron ore enterprise originally used the traditional hoist to lift the ore, but there were problems such as unadjustable speed and insensitive braking, resulting in an operation efficiency of only 60%. After the introduction of Zhengzhou Rongjing 50-ton electronically controlled winch in 2023, the speed of 0.5-10 m/min can be adjusted steplessly through the frequency converter. With the double brake system, the lifting capacity per shift will be increased from 1200 tons to 1800 tons, and the equipment failure rate will be reduced from 3 times per month to 0.5 times. The person in charge of enterprise technology said: "this model can be adapted to extreme environment of -20 ℃ to 50 ℃, and can still operate stably in mining area with an altitude of 3000 meters, thus solving the problem of braking attenuation in plateau operation."

FAQ: Frequently Asked Questions about Electric Control winch

Q1: Can the electronically controlled winch fit in a small space?
A: Zhengzhou Rongjing provides vertical circulating winch, which can be compressed to 2 meters in height. Through the design of compact planetary reducer, the installation space is reduced by 40% while maintaining a pulling force of 5 tons, which is suitable for low headroom scenes such as subway tunnels.

Q2: How to extend the service life of equipment?
A: It is recommended to replace the gear oil every 500 hours (use L-CKC220 industrial gear oil), check the thickness of the brake friction plate every 2000 hours (replace when the remaining thickness is ≥ 3mm), and regularly clean the dust on the motor heat sink to ensure that the equipment has been running continuously for more than 5 years without overhaul.

Q3: Can you customize non-standard models?
A: Zhengzhou Rongjing supports customization of parameters such as tension, speed and installation form. For example, a 10-ton anti-corrosion model customized for a water conservancy project, with 316L stainless steel shell and IP65 protection grade, can be used continuously in salt spray environment for 10 years, and has passed the 2000-hour salt spray test of CNAS certified laboratory.